I have run into a common, yet difficult problem. I do not use Photoshop for image manipulation. Since all my work is web-based, GIMP does what I need in 99% of the situations. The problem is that I occasionally receive PSD files with CMYK encoding rather than RGB encoding. These files will not open in GIMP, nor will they convert in ImageMagick.
Has anyone found a good solution for converting CMYK files to RGB files (either PSD format or a flat format like PNG) that does not involve the use of Photoshop? Say a plug-in for GIMP or a standalone utility?
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It created a bunch of files named output-[0-9].png one for each layer.
convert input.psd -colorspace rgb output.png
Good enough to start working with it on Gimp.
When I tried to open those PSDs in Gimp 2.6 the message I got was:.
I'm using Ubuntu Lucid's Imagemagick:.
Error loading PSD file: Unsupported color mode: CMYK
Version: ImageMagick 6.5.7-8 2009-11-26 Q16 http://www.imagemagick.org Copyright: Copyright (C) 1999-2009 ImageMagick Studio LLC Features: OpenMP
Just right click on a PSD file and choose "Open With Other Application" and choose OpenOffice.org Drawing.
(Assuming you are using GNOME.). It doesn't support layers though, so you can't do anything really fancy..
I've opened a CMYK .psd file of about 26 Mb in Size (6761 x 2423 pixels) in Krita version 2.8.1 with KDE version 4.13.3 in Ubuntu Linux 14.04.
After converting the color space from CMYK to RGB using the dialogue
Image-->Propertiesin Krita this program is able to store the image as a RGB PNG file.
Update: Nicolas pointed out in a comment below: if your .psd file contains several layers it might be necessary, to go into
Image-->Convert Image Color Spacebefore saving.. Afterwards I was able to open the resulting RGB PNG with gimp and all colours were converted in a reasonable way as far as I can tell.. Krita was already mentioned in a comment (by Heiken) above.
But since Krita is in my opinion one of the best suitable answers to the original question I decided to post this answer to report about my experience here..
Robinson's "Separate" plug-in.
I then saved it again which took ages - not a surprise when I looked at the unbelievable size of the file.
The original was 3.7Mb and the re-saved version was 197Mb ! Fortunately, it zipped to about 940K.. Anway, the point is that when I tried the re-saved file on the GIMP on Linux, it seemed to work fine.
It even gave me layers.. BTW, paint.net is a fine little program, though it works a little differently than The Gimp.
It is also free :-). Hope that this helps.. R..
. late answer to the question and probably not around when you posed the question, but there you go.
I do not know how well it works as I just started using it..